Problem Display
PID: 142061 (5K1b/6n1/1Ppkp3/2N2p2/2QB3p/8/7r/8 w - - 0 1)

Markwick, Frederick W

Stratford Express, 1906

5K1b/6n1/1Ppkp3/2N2p2/2QB3p/8/7r/8

#2

5 + 8


14867 BCPS Library 2011
15351 SCPF/BCPS Black Books 2015

SOLUTION


  • SOUND
  • Sets
    • 1...Sh5
      • 2.Qxe6#
    • 1...Se8
      • 2.Qxe6#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Sh5
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#
      • 1...e5
        • 2.Qd3#
      • 1...Rd2!
    • 1.Be3?
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Sh5
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#
      • 1...e5
        • 2.Qd3#
      • 1...Rd2!
    • 1.Bf6?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Be7#
      • 1...Rd2!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Sh5
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#
      • 1...e5
        • 2.Qd3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::QAR1(A),XP(f)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR2(A)
      • Vars
        • K(e);S_FLIGHT::QAB1(A)
        • S(g);N_GUARD::QAR1(A),XP(f)
        • P(f);SBLOCK::QAR(A)
      • Refutation
        • R(a);
    • Try
      • B(B);
      • Threat
        • QAR2(A)
      • Vars
        • K(e);S_FLIGHT::QAB1(A)
        • S(g);N_GUARD::QAR1(A),XP(f)
        • P(f);SBLOCK::QAR(A)
      • Refutation
        • R(a);
    • Try
      • B(B);
      • Threat
        • QAR2(A)
      • Vars
        • P(f);SBLOCK::B(B)
      • Refutation
        • R(a);
  • Actual
    • B(B);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);S_FLIGHT::QAB1(A)
      • S(g);N_GUARD::QAR1(A),XP(f)
      • P(f);SBLOCK::QAR(A)


Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).